just windowed my 543 in my wagon tuesday nite. looking at options with 5.7/6.4 from mother mopar. wife works at mopar dealer so price could be very good. my question is this=why does mopar recommend using a stick shift trans with the wiring harness/pcm set up? i would use a 727 with manual shift valve body i think. any insight to this swap is greatly appreciated. thanks in advance rick.